content: /**
   * Copyright (c) 2016-present, RxJava Contributors.
   *
   * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in
   * compliance with the License. You may obtain a copy of the License at
   *
   * http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software distributed under the License is
   * distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See
   * the License for the specific language governing permissions and limitations under the License.
   */
  
  package io.reactivex.common;
  
  import static org.junit.Assert.*;
  
  import java.util.List;
  import java.util.concurrent.TimeUnit;
  
  import org.junit.Test;
  
  import io.reactivex.common.Scheduler.Worker;
  import io.reactivex.common.annotations.NonNull;
  import io.reactivex.common.exceptions.TestException;
  import io.reactivex.common.internal.disposables.SequentialDisposable;
  import io.reactivex.common.internal.functions.Functions;
  
  public class SchedulerTest {
  
      @Test
      public void defaultPeriodicTask() {
          final int[] count = { 0 };
  
          TestScheduler scheduler = new TestScheduler();
  
          Disposable d = scheduler.schedulePeriodicallyDirect(new Runnable() {
              @Override
              public void run() {
                  count[0]++;
              }
          }, 100, 100, TimeUnit.MILLISECONDS);
  
          assertEquals(0, count[0]);
          assertFalse(d.isDisposed());
  
          scheduler.advanceTimeBy(200, TimeUnit.MILLISECONDS);
  
          assertEquals(2, count[0]);
  
          d.dispose();
  
          assertTrue(d.isDisposed());
  
          scheduler.advanceTimeBy(200, TimeUnit.MILLISECONDS);
  
          assertEquals(2, count[0]);
      }
  
      @Test(expected = TestException.class)
      public void periodicDirectThrows() {
          TestScheduler scheduler = new TestScheduler();
  
          scheduler.schedulePeriodicallyDirect(new Runnable() {
              @Override
              public void run() {
                  throw new TestException();
              }
          }, 100, 100, TimeUnit.MILLISECONDS);
  
          scheduler.advanceTimeBy(100, TimeUnit.MILLISECONDS);
      }
  
      @Test
      public void disposePeriodicDirect() {
          final int[] count = { 0 };
  
          TestScheduler scheduler = new TestScheduler();
  
          Disposable d = scheduler.schedulePeriodicallyDirect(new Runnable() {
              @Override
              public void run() {
                  count[0]++;
              }
          }, 100, 100, TimeUnit.MILLISECONDS);
  
          d.dispose();
  
          assertEquals(0, count[0]);
          assertTrue(d.isDisposed());
  
          scheduler.advanceTimeBy(200, TimeUnit.MILLISECONDS);
  
          assertEquals(0, count[0]);
          assertTrue(d.isDisposed());
      }
  
      @Test
      public void scheduleDirect() {
          final int[] count = { 0 };
  
          TestScheduler scheduler = new TestScheduler();
  
          scheduler.scheduleDirect(new Runnable() {
              @Override
              public void run() {
                  count[0]++;
              }
          }, 100, TimeUnit.MILLISECONDS);
  
          assertEquals(0, count[0]);
  
          scheduler.advanceTimeBy(200, TimeUnit.MILLISECONDS);
  
          assertEquals(1, count[0]);
      }
  
      @Test
      public void disposeSelfPeriodicDirect() {
          final int[] count = { 0 };
  
          TestScheduler scheduler = new TestScheduler();
  
          final SequentialDisposable sd = new SequentialDisposable();
  
          Disposable d = scheduler.schedulePeriodicallyDirect(new Runnable() {
              @Override
              public void run() {
                  count[0]++;
                  sd.dispose();
              }
          }, 100, 100, TimeUnit.MILLISECONDS);
  
          sd.set(d);
  
          assertEquals(0, count[0]);
          assertFalse(d.isDisposed());
  
          scheduler.advanceTimeBy(400, TimeUnit.MILLISECONDS);
  
          assertEquals(1, count[0]);
          assertTrue(d.isDisposed());
      }
  
      @Test
      public void disposeSelfPeriodic() {
          final int[] count = { 0 };
  
          TestScheduler scheduler = new TestScheduler();
  
          Worker worker = scheduler.createWorker();
  
          try {
              final SequentialDisposable sd = new SequentialDisposable();
  
              Disposable d = worker.schedulePeriodically(new Runnable() {
                  @Override
                  public void run() {
                      count[0]++;
                      sd.dispose();
                  }
              }, 100, 100, TimeUnit.MILLISECONDS);
  
              sd.set(d);
  
              assertEquals(0, count[0]);
              assertFalse(d.isDisposed());
  
              scheduler.advanceTimeBy(400, TimeUnit.MILLISECONDS);
  
              assertEquals(1, count[0]);
              assertTrue(d.isDisposed());
          } finally {
              worker.dispose();
          }
      }
  
      @Test
      public void periodicDirectTaskRace() {
          final TestScheduler scheduler = new TestScheduler();
  
          for (int i = 0; i < 100; i++) {
              final Disposable d = scheduler.schedulePeriodicallyDirect(Functions.EMPTY_RUNNABLE, 1, 1, TimeUnit.MILLISECONDS);
  
              Runnable r1 = new Runnable() {
                  @Override
                  public void run() {
                      d.dispose();
                  }
              };
  
              Runnable r2 = new Runnable() {
                  @Override
                  public void run() {
                      scheduler.advanceTimeBy(1, TimeUnit.SECONDS);
                  }
              };
  
              TestCommonHelper.race(r1, r2, Schedulers.io());
          }
  
      }
  
  
      @Test
      public void periodicDirectTaskRaceIO() throws Exception {
          final Scheduler scheduler = Schedulers.io();
  
          for (int i = 0; i < 100; i++) {
              final Disposable d = scheduler.schedulePeriodicallyDirect(
                      Functions.EMPTY_RUNNABLE, 0, 0, TimeUnit.MILLISECONDS);
  
              Thread.sleep(1);
  
              d.dispose();
          }
  
      }
  
      @Test
      public void scheduleDirectThrows() throws Exception {
          List<Throwable> list = TestCommonHelper.trackPluginErrors();
          try {
              Schedulers.io().scheduleDirect(new Runnable() {
                  @Override
                  public void run() {
                      throw new TestException();
                  }
              });
  
              Thread.sleep(250);
  
              assertEquals(1, list.size());
              TestCommonHelper.assertUndeliverable(list, 0, TestException.class, null);
  
          } finally {
              RxJavaCommonPlugins.reset();
          }
      }
  
      @Test
      public void schedulersUtility() {
          TestCommonHelper.checkUtilityClass(Schedulers.class);
      }
  
      @Test
      public void defaultSchedulePeriodicallyDirectRejects() {
          Scheduler s = new Scheduler() {
              @NonNull
              @Override
              public Worker createWorker() {
                  return new Worker() {
                      @NonNull
                      @Override
                      public Disposable schedule(@NonNull Runnable run, long delay, @NonNull TimeUnit unit) {
                          return Scheduler.REJECTED;
                      }
  
                      @Override
                      public void dispose() {
  
                      }
  
                      @Override
                      public boolean isDisposed() {
                          return false;
                      }
                  };
              }
          };
  
          assertSame(Scheduler.REJECTED, s.schedulePeriodicallyDirect(Functions.EMPTY_RUNNABLE, 1, 1, TimeUnit.MILLISECONDS));
      }
  
      @Test
      public void holders() {
          assertNotNull(new Schedulers.ComputationHolder());
  
          assertNotNull(new Schedulers.IoHolder());
  
          assertNotNull(new Schedulers.NewThreadHolder());
  
          assertNotNull(new Schedulers.SingleHolder());
      }
  
      static final class CustomScheduler extends Scheduler {
  
          @Override
          public Worker createWorker() {
              return Schedulers.single().createWorker();
          }
  
      }
  
      @Test
      public void customScheduleDirectDisposed() {
          CustomScheduler scheduler = new CustomScheduler();
  
          Disposable d = scheduler.scheduleDirect(Functions.EMPTY_RUNNABLE, 1, TimeUnit.MINUTES);
  
          assertFalse(d.isDisposed());
  
          d.dispose();
  
          assertTrue(d.isDisposed());
      }
  }
  